package com.csx.base.design.structure.bridge;

/**
 * @author cuisongxu
 * @date 2022/9/24 12:09
 */
public abstract class Pen {

    protected Ruler ruler;

    public Pen(Ruler ruler) {
        this.ruler = ruler;
    }

    /**
     * 画笔方法
     */
    public abstract void draw();
}
